package java编程思想.第18章._6_IO流的典型使用方式;

import java.io.IOException;
import java.io.RandomAccessFile;

public class UsingRandomAccessFile {

	static String file = "D:/UsingRandomAccessFile.txt";

	static void display() throws IOException {
		RandomAccessFile rf = new RandomAccessFile(file, "r");
		for (int i = 0; i < 7; i++) {
			System.out.println("Value " + i + ":" + rf.readDouble());
		}
		rf.close();
	}

	public static void main(String[] args) throws IOException {
		RandomAccessFile rf = new RandomAccessFile(file, "rw");
		for (int i = 0; i < 7; i++) {
			rf.writeDouble(i * 1.414);
		}
		rf.writeUTF("The end of this file");
		rf.close();
		display();
		rf = new RandomAccessFile(file, "rw");
		rf.seek(5 * 8);
		rf.writeDouble(47.0001);
		rf.close();
		display();
	}

}
